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/*
* File: uart.hpp
* Author: naopross
*
* Created on May 2, 2018, 7:04 PM
*/
#ifndef UART_HPP
#define UART_HPP
#include <cstdint>
#include <cstddef>
#include <string>
extern "C" {
void usart_1_isr();
void usart_2_isr();
void usart_3_isr();
void usart_4_isr();
}
namespace uart
{
const unsigned devices_count = 4;
enum class status : unsigned int
{
rx_data_available = 1<<0,
rx_overrun_error = 1<<1,
framing_error = 1<<2,
parity_error = 1<<3,
receiver_ide = 1<<4,
tx_complete = 1<<8,
tx_full = 1<<9,
};
enum class transfer_status : unsigned int
{
rx_full = 1<<0,
rx_data_present = 1<<1,
rx_empty = 1<<2,
tx_full = 1<<3,
tx_empty = 1<<4,
};
std::string rx_buffer[devices_count];
std::string tx_buffer[devices_count];
template<unsigned dev>
void initialize();
template<unsigned dev>
uint8_t peek(uint16_t offset);
template<unsigned dev>
uint8_t read(void);
template<unsigned dev>
unsigned read(uint8_t *buffer, const unsigned numbytes);
template<unsigned dev>
void write(const uint8_t byte);
template<unsigned dev>
unsigned write(const uint8_t *buffer, const unsigned numbytes);
template<unsigned dev>
status status();
template<unsigned dev>
transfer_status tranfer_status();
template<unsigned dev>
unsigned rx_buffer_size();
template<unsigned dev>
unsigned tx_buffer_size();
template<unsigned dev>
bool rx_buffer_empty();
template<unsigned dev>
bool tx_buffer_full();
}
#endif /* UART_HPP */
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